ernie Noimporta, el conjunto en sfFKI!5f

simole88 You are probably new to this hobby, because this is the value that is given the most importance. If you are referring to the maximum distance you can go away with your model before losing the signal (fail-safe), unfortunately you must know that there is no precise boundary. The distance is influenced by any interference from electronic devices present in your flight area, by air humidity, by a value of RF freq. fine tune not set correctly, by the receiver you have chosen and by the positioning of the antennas. In any case it is a small radio but it is certainly sufficient to fly indoor or in sight with your drone, plane or RC-Model. I do not recommend adding a crossfire module, even if supported, because battery 1S 18650 Li-ion will not be enough to give power to everything